Paper Review/iToF5 iToF 논문, reviewers' comments 보호되어 있는 글 입니다. 2024. 8. 3. A Range-Shift Technique for TOF Range Image Sensors (2009) Introduction Both long measurement range and high range resolution is required for ToFs There is a trade-off between the maximum range and range resolution Range-shift technique can be used to improve range resolution wthout loss of the measurement range If the TG/TC is reduced, the range resolution is further improved for whole range, because the shot noise due to ambient light is reduced TG ga.. 2023. 6. 30. Indirect-ToF system optimization for sensing range enhancement with patterned light source and adaptive binning (2021 IISW) Introduction DToF sensors measure long distances and have low Tx power consumption due to the high sensitivity of SPADs. But, spatial resolution is limited due to large pixel size, high bias voltage is required, and short distance detection is difficult due to high noise floor due to high-sensitive SPAD pixel circuits iToF sensors use common CIS-based pixel structure with small pixel pitch and d.. 2023. 6. 23. A Hybrid ToF Image Sensor for Long-Range 3D Depth Measurement Under High Ambient Light Conditions (2023 IEEE JOURNAL OF SOLID-STATE CIRCUITS) Composed of a photodiode (PD) and four transfer gates (G1–G4) for four signal-tap outputs and a draining gate (GD) The floating diffusions are connected to MOS capacitors (high full well capacity (FWC) of 100 ke-) Photo charges due to ambient light and reflected light out of measurement range are drained out by the draining gate GD The reset transistors (RT1–RT4) are turned on for resetting phot.. 2023. 6. 16. An 8-Tap CMOS Lock-In Pixel Image Sensor for Short-Pulse Time-of-Flight Measurements (2020 Sensors) 최근에 출판된 8-tap iToF 논문 우리 iToF와 다르게 continuous-wave (CW) signal 대신 short-pulse (SP) signal 이용 Introduction & Summary - Short-pulse (SP) iToF sensor는 strong ambient light에서 강점이 있으며, motion artifact mitigation에 용이하다 - 같은 그룹에서 2020년에 발표한 7-tap, 1-drain iToF는 low signal light level과 weak ambient light에서만 성능이 원활하게 나왔다 (not suitable for outdoor use due to small FWC) - Depth-adaptive time-gating number .. 2023. 6. 9. 이전 1 다음
